Chair hub



se t. 27, 1927 s M BUMP 3, 9

CHAIR HUB Filed May 10, 1923 is preferably approximately circular in out line, having radial projections 7 between the circular segments for attachment to the chair legs. Ezurh plate is provided with slots 7*. The inner Wall of each slot is nearly (OllCt'iflil'lt with the axis of the l'lllll" 3 and of the huh, hut it. as well as each lug 5, is formed on spiral which, it developed sutiieiently, would intersect the said axis. In the drawing, the rightrhand end of the inner wall of the slotis further distant. from the axis of the tube 2 than is the lefthnnd tntl. The lett-lnind end of the slot is of justsutlicient width to receive between the inner and outer walls thereof :1 lug .3"; the righbhiind end of each slot is widened as shown at 7, to facilitate the insertion of the cooperating lugs thereinto.

lVith the parts mnritructetl and arranged as dPhtIll'ltltl. the legs tube and huh will he assembled as tollov. :--'l'hi: legs are positinned about the tube substantially as indirated in Fig. 3. The hub segments are then inserted betueen'the legs and the mp and bottom plates are then applied with the lugs 5" in the ri; -'hth:ind ends of the lots 7". 'lliese plates and the huh iiW-mlily generally are ihrn hold in It l' llllilll l and the plates are pressrd toward rut-h uitlu-r and f fflttltl in the tlppro u'inte (lirertion to (arise the lugs fr to he .noted radially inwardly by engagement with the slots. When the plates have liven rotated sutlirient distance and the :muuients tire gripping the legs firmly, the plates are secured to the legs by means of the srrews 9.

BQPHHSC of the detailed eonstrur-lion of the top. bottom and side plates of ttlt'll huh segment. the tori-mg of the top and bottom clamping plzites toward each other during the assembling oneretion will reuse the beveled surfaces 5" of the top and bottom plates to engage the beveled surfer-es 6 and thus increase th v (lumping action of the segment ng'ziiinst the legs by toreing the side walls of the segments outwardly. ln prurtit-e, the slots 7 will be of su h length and the pitch of the spiral on which they are formed will he surh that the plates may he adjusted from time to time the lugs 5 in Fig. 1 being shown in their extreme inwardly uoljustetl positions.

In Fig. 11 there is shown a. modification of my invention wherein the clamping plates 9 are provided with longer attarhing arms 9 and the slots 9* are not provided with the enlargements sueh as shown at 7. lln all other respects. the top and bottom plates of the huh will he substantially Me tio with thew shown in the preceding iieus.

ly reason of the ("UflSiTllOtlUll and arlilnfltltlttil. of parts set forth herein. l am unaided to "provide :2 huh ii--emhly for the legs of ehnirs and for similar purposes the romponent members of Whiel: assembly may be produ-oeil economically and whit-in when assembled, will produce 11, wry ellieieilt huh rmistrurtion Jllltl one -.'ltl=li will 5 the iidjustitg inwardly of :lw trout time to tint: to compete-tine for var-er material.

llztri rig whiit l t'ltlilll is:

l. seeuriiu: tltYl'T'. tor rhiiii lets eluding is, itei'itritl upright im'nilier. a plat rulity ot huh segments earl) segment liming surfures adopted to engage the :idjat'ent fates of rhzzir h2g E-lltl segments l t-inf); nioiahle radially with respert to said central member to grip the rlmir legs. means ini'lepenilent of said central meniher for drawing mid monts inwardly toward said central member. said means rompris in a rhnuping plate and cooperating means riirrird by the udjureut ends til said huh segments and i y iiid rlnrnniug plot:- for moving; he (tin of t swunrnts inwardly through tit *1 ion z t. '(l plate and tz itll' t nted m9. ,i h lding the stud lzr'i elrimpin i ii i. i eluding :i wnrrzl iignii ht. mrxulmg rziliti in" hot a liiuntiim.

thu i'lesriihetl my i kili li i".

iultlllliti in virgin; the i (luiir lirgl'r. means independent of' i in: triil inrmher F r sernring the Porn dendrite; .i j l r 1 ends 0 M l {m rits l\l p null 21 (ltlllllltl plane reenter: ing: w th thr (wip r site end oi siiid huh segmrnts; for int-vim: the wine radially inwardly th Stllil (lump ingr pletr having inclined slots rindv lusfl projeetin; from the ends of said huh segy merits llltl engaging in said slots and means or MQtlllllfj said slumping plate in chimping position. said (lumping plate heiug en tirely in le iei'ident of said central memli ix 3, The uttmhination. with a pair of ungularly di posed rluiir legs. of a segn'ie-ntul huh member having lateral surfares adapted to engage the surt'nees of the their legs adjacent thereto, respertirelm means for curing one end of said member in place,

means for :idjustuhly seruring the opposite end of the said member in plane, the last mei'itioned means comprising El rotatable (lumping member. and an inelineil slot car ried by one of said members and a lug can ried by the other member and adapted to enter said slot wherehv the rotation of the clamping member in the appropriate dire-e tien will move the adjacent 0nd of the hub member radially inwardly. and mean for securing the clamping member in 'ilsu'e.

4. A huh Construrtion of the ill tlil' desrrihed eomprising a plurality of son mental huh memhers each having opposed member and cooperating lug are 2' m l slots carried by the huh lltll'ln' an i the clam ung mcmhcm where the ro in oi the clamping: members in the. appropriate direction will move the huh members radially inwardly, and means for securing the said clamping members in. (damping position. 4

A huh' construction of the character described comprising a plurality of segmen' tal hiib members each having op osed lateral surfaces to engage the adjacent surfaces of chair legs, means for securing the said inembers in place and tor I!!!)Vli'ifj them radially inwardly, said means comprising a top and a bottom clamping member having inclined slots and lugs on the hub members adapted to enter said slots whereby the rotation of the clam jiing members in the appropriate direction will move the hub members radially inivarrlly, and means for securing the sail? clamping mom hers in clamping position 6. A hub construction compri lg a pinrality of huh segments each having; rad side walls to engage the adjacentsin-fact of chair legs, tile side Walls having their central portions removed and each side Wall having its ends beveled outwarr i from the inner face thereof, each segment. having top and bottom walls each ha y its radial edges beveled complementarily to the :ltljacent ends of the side walls and means for clamping the said segments together. the clamping means serving to force the heveled surfaces of the. end walls into engagement with the beveled surfaces of the side Walls tliereby to force the side walls away from each other and against the chair '7. A hub construction comprising a phr ralit v of hub segments each having radial side Walls to engage the adjac nt nurtures of hair legs. each side wall having its ends beveled outwardly from the inner face thereof, each StlQ'Tle-ll; having top and hottom walls each having its radial orig cs beveled complementaril to the adjacent ends of the side walls and means for clamping: the said segments tUt'fOll'lQX, the. clamping means serving to force the beveled surfaces oi the end walls into engagement. with the beveled surfaces of the side walls thrrehv to. force the side will away from ea h other and against the chair 8. A hub construct on comprising a plu 'ality of huh segments each having an outer wall and radial side walls to engage the :uljacent surfaces of chair logs the side walls having their central portions; removed and. each Side wall having its ends (lev led outwardly from the inner face 'th it each segment having top and bottom Walls 1 ro- .lld outer wall anal h e; hutch-til comple- LtIll nds of the side clumping the Sllltl seg- 1hr: rluiugiiuu' min: crvinl fort? ihr lisjvcictl u! lure of the Mill \i'ulls into engagement v--th the lieu-loll surfaces file walls rher hv to t rch the Sltlt, away from eairli other llIHl against the legf". and means ope ative. l the rotsv a of the clamping means for drawing the.

t nts radially inwardly.

A huh construction cmupr ing :1 phr i'ality of hub segments: each having an outer wall and rad side walls each having-1 an cndlieveletl outwardly from the inner face thereof, each segment having an end wall having its radial edges: overhang in and beveled cninplenientaril to tie beveled ends of the side walls, and means for clamping the said sginents tog then. the clamping m servingto tom: the heveled surfaces the end well into engagement with the beveled the side walls thereby to force the Elli? away from each other and age 1 lell). t

or chair legs in side we outivai ouch liming; its op iosite (i -1.

. each segment having walls overhanging the si(lo Walls and en sh having its radial edges outbeveled to {nor-en e with the hevela s of t ule wall: thereby the side ==vviiv from each other inst the chair leg-sf i ll. A huh co lPi'lS llQ e plnrnlit of scgrmonth each having an outer wall and radially extending side walls adapted to fit between adjacent sides of the le s of a. chair each :segn'ient having a wall overhanging ends of the side Walls and adapted to be forced heiween such therely to force the side walls away from each other and against the chair legs.

12'. huh con'iprising a plurality of segan outer wall, and radii-u walls adapted to fit heu'lcs f the legs of a chair, iziving top and l)()l?lfim walls )9 side walls and adapted to he forced iii-tween such side walls and each said top and lit-om walls each having edges a lag'rl'eil to engage the edges of the side (1, thereby to force the s avvav 'll'i'ufi each other and a 'ainst 3. A hub cornprising a plurality of seglll) \ means cooperating with the top and huitmn walls to force the latter toward each other thereby to force the side walls away from each other and against the chair legs and to 5 (,il'HW the segments radially inwardly.

14. A hub comprising a pluralitv of segments each having an outer wall anti radially extending side walls; adapted to tit between the adjacent sides of the legs of a chair and end 10 walls overhanging the ends of the side walls,

and. means for holding the aial segments in with one of said eml Walls to force the latter between the side Walls and force the side walls away from each other and against. the chair legs.

In testimony whereof, I hereunto affix my signature.

SPENCER M. BUMP.

iLSQlllIJleil l'cluilOll. saiu manna cooperating 

